81 lines
2.9 KiB
JavaScript
81 lines
2.9 KiB
JavaScript
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'use strict';
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var path = require('path');
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var fs = require('fs');
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var url = require('url');
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// Make sure any symlinks in the project folder are resolved:
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// https://github.com/facebookincubator/create-react-app/issues/637
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var appDirectory = fs.realpathSync(process.cwd());
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function resolveApp(relativePath) {
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return path.resolve(appDirectory, relativePath);
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}
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// We support resolving modules according to `NODE_PATH`.
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// This lets you use absolute paths in imports inside large monorepos:
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// https://github.com/facebookincubator/create-react-app/issues/253.
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// It works similar to `NODE_PATH` in Node itself:
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// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
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// We will export `nodePaths` as an array of absolute paths.
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// It will then be used by Webpack configs.
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// Jest doesn’t need this because it already handles `NODE_PATH` out of the box.
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// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
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// Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
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// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
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var nodePaths = (process.env.NODE_PATH || '')
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.split(process.platform === 'win32' ? ';' : ':')
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.filter(Boolean)
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.filter(folder => !path.isAbsolute(folder))
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.map(resolveApp);
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var envPublicUrl = process.env.PUBLIC_URL;
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function ensureSlash(path, needsSlash) {
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var hasSlash = path.endsWith('/');
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if (hasSlash && !needsSlash) {
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return path.substr(path, path.length - 1);
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} else if (!hasSlash && needsSlash) {
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return path + '/';
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} else {
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return path;
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}
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}
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function getPublicUrl(appPackageJson) {
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return envPublicUrl || require(appPackageJson).homepage;
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}
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// We use `PUBLIC_URL` environment variable or "homepage" field to infer
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// "public path" at which the app is served.
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// Webpack needs to know it to put the right <script> hrefs into HTML even in
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// single-page apps that may serve index.html for nested URLs like /todos/42.
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// We can't use a relative path in HTML because we don't want to load something
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// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
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function getServedPath(appPackageJson) {
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var publicUrl = getPublicUrl(appPackageJson);
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var servedUrl = envPublicUrl || (
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publicUrl ? url.parse(publicUrl).pathname : '/'
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);
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return ensureSlash(servedUrl, true);
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}
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// config after eject: we're in ./config/
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module.exports = {
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appBuild: resolveApp('build'),
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appPublic: resolveApp('public'),
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appHtml: resolveApp('public/index.html'),
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appIndexJs: resolveApp('client/index.js'),
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appPackageJson: resolveApp('package.json'),
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appSrc: resolveApp('client'),
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yarnLockFile: resolveApp('yarn.lock'),
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testsSetup: resolveApp('client/setupTests.js'),
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appNodeModules: resolveApp('node_modules'),
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nodePaths: nodePaths,
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publicUrl: getPublicUrl(resolveApp('package.json')),
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servedPath: getServedPath(resolveApp('package.json'))
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};
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